Tool-stand.



No. 892,002. PATENTBD JUNE 80, 1908. R. MoGARTY & W. S. GIBLE.

TOOL STAND.

APPLIOATION FILED J LY 17, 19.07.

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Jwuavvto w/ UNITED STATES PATENT OFFICE.

RALPH MCCARTY, OF LEBANON, ANDWALTER S. GIELE, OF MYERSTOWN,PENNSYLVANIA, ASSIGNORS TO STOEVER FOUNDRY & MANUFACTURING COMPANY, ACORPORATION OF PENNSYLVANIA.

TOOL-STAND To all whom it may concern:

Be it known that we, RALPH MoOARrY and WVALTER S. GIELE, citizens of theUnited States, residing at Lebanon, in the county of Lebanon and Stateof Pennsylvania, and at Myerstown, in the county of Lebanon and State ofPennslyvania, respectively, have invented certain new and usefulImprovements in Tool-Stands, of which the following is a full, clear,and exact specification.

This invention relates to tool stands, and more particularly hasreference to the stands 01' supports for threading dies and cutting-offtools used in threading machines for rods or pipes. Such machinescommonly employ a rotating chuck for rotating the rod or pipe with afixed diehead, support and cuttingoff tool arranged to be brought intoposition to work on the material.

The object of this invention is to provide an improved construction andarrangement of the tool-stand on which the dies and cutters are mountedwhereby the cutters and steadying jaws may be brought closer to thechuck than has been possible in the constructions heretofore devised. Inmachines of this character, as the length of rod or pipe decreases, thetool-stand is moved toward the chuck as far as it is possible, and whenit can move no farther, there is a length of material between the jawsof the chuck and the cut-oif tool whichcannot be cut off.

According to this invention, a tool-stand is provided wherein thedie-head is laterally slidable to an extent suflieient to clear thechuck when the toolstand is moved up against the chuck, and mounted inthe toolstand are steadying jaws for supporting the work between thecut-off tool and the chuck arranged in such manner as to leave theshortest possible length of material between the chuck and the cut-offtool which cannot be further worked.

The invention with respect to a preferred form thereof is shown in theaccompanying drawings, wherein Figure 1 is a front view of a tool-standembodying the invention; Fig. 2 is a plan view, showing the tool-standat its innermost position against the chuck; Fig. 3 is a verticalsection through the center of the tool-stand, and Figs. 4 and 5 showmodified constructions of the tool-stand with provisions for taking upwear.

1 represents. a casting which will be mounted Specification of LettersPatent.

Application filed. July 17, 1907.

Patented June 30, 1908.

Serial No. 384,238.

to slide on ways 2 carried by a suitable machine bed having a powerdriven chuck 3. The tool-stand comprises the transverse upright portion4 of the casting 1 having agroove or guide-way 5 machined therein, andalso the die-head guiding surfaces 6, which are outside the interiorguides 5.

7 is the die-head carrying therein suitable expansible dies controlledby a lever 8, and mounted on a block 9, which block is formed withinwardly projecting portions 10 sliding on the surfaces 6 of the uprightportion 4 of the casting 1. In order to fasten the diehead to the stand,transverse bars 11 are provided which are secured to the front faces ofthe stand by screws 12, and over which the block 9 will slidetransversely;

Mounted within the stand to slide on the surfaces 5 are oppositelydisposed blocks 13, 14 having cut-out portions to bear on the surface ofthe round material, and constituting steadying jaws. These steadyingjaws are sin'1ulta1'1eously operable towards and from each other bymeans of a right and left hand screw 15 journaled at the ends in thestand and having screw threaded engagement with the jaws 13 and 14. Foroperating the jaws a crank 16 is mounted on the screw 15. It will beobserved that the jaws 13 and 14 overlap, that is, that they pass eachother, which is for the purpose of enabling them to be adjusted fordifferent sizes of material, though it will be understood that thisarrangement is not essential. Also mounted to slide in the uprightportion of the stand 4, are oppositely disposed blocks 18, 19 carryingcut-oil tools 20, and operated in a manner somewhat similar to the jaws13, 14 by screws 21 and crank 22. It will thus be seen that the bars 11besides fastening the sliding die-head to the stand, will also hold thesteadying jaws and the cut-off tool blocks in their respectivepositions.

25 is an adjustable stop carried by the casting and cooperating with alug 26 carried by the die-head for stopping it in threading position.

It will be seen that the thickness of the die-head 7 and the block onwhich it is mounted is negligible, when it is desired to cut off thematerial as close as possible to the chuck, because the die-head andblock on which it is mounted can he slid laterally as shown in Fig. 2,so as to clear the chuck, and thus not interfere with bringing the frontface of the stand up close against the chuck. There is, however, acertain amount of thickness or length necessary for the guiding portions10 of the die-head, and also there is a certain amount of additionalthickness or length necessary for the mounting of the steadying jaws andthe cut-off tool blocks. In order to reduce the distance from the jawsof the chuck to the cut-off tools, the latter must be mounted as near aspossible to the front face of the tool-stand, and at the same timeleaving space in which the steadying jaws may be mounted and operated.This result is attained by the construction herein described by mountingthe die-head slide on the outside of the tool-stand casting, and thuspermitting the steadying jaws and the cut-off tool blocks to be mountedwithin and close to the front of the die-stand. In Fig. 3 for instance,the left-hand steadying jaw 13 comes flush with the front face of theretaining bar 11, and the right-hand jaw 14 is immediately behind thejaw 13, and immediately behind the jaws 13 and 14 and contacting withthem are the cut-off tool blocks 18, 19, and all of these parts are heldin assembled relation by the bars 11. The amount of stock which cannotbe cut off is thus only slightly greater than the thickness of thesteadying jaws, when the front face of the tool-stand is brought upclose to the face of the chuck. This distance is reduced by thisconstruction upwards of fifty per cent, as compared with constructionswherein the steadying jaws and cut-oif tool blocks are mounted at therear of the die-head slide.

A further advantage of this invention resides in the fact that thecasting 4 need only be set once in a shaping machine, and all of themachined surfaces can be formed without changing its position, orrequiring it to be turned over, thus reducing the cost of manufacture.

In the construction thus far described, Wear may be taken up by means ofshims, where desired, but in some constructions it is desirable toprovide means for taking up the wear of the slides on each other and onthe casting, and the constructions of Figs. 4 and 5 are intended forthis purpose. In

Fig. 4, the casting 4 is provided with a flatv front face, and theslides 18 and 14, and 19, 20, are secured thereto by means of top andbottom bars 29 and screws 30, similar in function to the bars 11 andscrews 12 before described. The bars 29 are provided with grooves inwhich the die-head slide 9 operates in the same manner as beforedescribed. It will'be observed that the blocks 29 have separate guidingsurfaces for the blocks 13, 14 and 18, 19 respectively, and wear will betaken up by removing shims from between fitted surfaces as beforedescribed. In Fig. 5, the slides 13, 14 and 18, 19 are beveled on theupper faces, and a key 31 inserted which can be adjusted by screws 32tapped through from the top of the casting 4. As the slides wear, thekey 31 may be screwed down by the screws to spread the slides againstthe rear side of the casting and of the bars 11.

From the foregoing description, it is thought that the construction,operation and advantages of the invention will be fully .understood, andthe specific construction herein described may be departed from invarious particulars without departing from the scope of the invention.

Having thus described our invention, we declare that what we claim asnew and desire to secure by Letters Patent, is,

1. The combination with a support and a die-head slide slidably mountedthereon, of steadying jaw slides mounted to slide on said sppportbetween the guides for the die-head s ide.

2, The combination with a support having exterior guides, of a die-headslide mounted in said guides, and interior steadying jaw guides andsteadying jaws sliding therein.

3. The combination with a support having a projecting portion formedwith exterior guides at opposite sides, of a die-head slide mounted onsaid guides, interior guides between said exterior guides, and a pair ofslides sliding between said interior guides.

4. The combination with a support having a projecting portion formedwith exterior guides at opposite sides, of a die-head slide mounted onsaid guides, interior guides between said exterior guides, a pluralityof sets of slides mounted side by side in said support between saidinterior guides, and means for independently actuating each set.

5. The combination with a support formed with a projecting portionhaving exterior guides at opposite sides, of a die-head slide mounted onsaid guides to slide in front of said projecting portion, interiorguides forme in said support between said exterior guides, andwork-steadying and cut-off tool slides carried by said support andbetween said interior guides.

6. The combination with a su port havin interior and exterior guides, ofa die-hea slide mounted on the exterior guides, and cut-off tool slidesmounted to slide on the interior guides, and a single means carried bythe support for securing both the die-head slide and the cut-ofi toolslides in the suport.

p 7. The combination with a support having interior and exterior guidingsurfaces, of a die-head slide mounted to slide on the exterior guidesurfaces, interior slides mounted to slide on the interior guidesurfaces, and a single means carried by the sup ort for securing anduiding the exterior side and the interior slides.

8. The combination with a support having I guiding surfaces, of atransversely movable die-head slide mounted to move on said exteriorsurfaces, steadying-j aw slides and cutoff tool slides moving on saidinterior guiding surfaces, and a pair of retaining bars secured to saidsup ort between said exterior and interior guic ing surfaces forretaining said slides on said support.

9, The combination with a support formed with oppositely disposedexterior slides, and

a die-head sliding thereon, of a plurality of pairs of slides mounted oncommon interior guides formed in said support between said exteriorguides.

10. The combination with a support, formed with oppositely disposedexterior slides, and a die-head sliding thereon, of a plurality of pairsof slides mounted on common interior guides formed in said supportbetween said-exterior guides, and a single means carried by the supportfor retaining said die-head and said interior slides on said support.

11. The combination with a support formed With oppositely disposedexterior slides, and a die-head sliding thereon, of a plurality of pairsof slides mounted on common interior guides formed in said supportbetween said exterior guides, and a single means for retaining saiddie-head and said interior slides on said support and having guidingsurfaces cooperating with said diehead and with one of said pairs ofinterior slides.

12. The combination with a support and a die-head slide slidably mountedthereon, of

cut off slides mounted to slide on said support between the guides forthe die-head slide.

13. The combination with a sup ort and a die-head slide slidably mountedticreon to slide over its front face, of steadying jaw slides mounted toslide between said die-head slides and flush with the front face of saidsupport.

In testimony whereof we affix our signatures, in presence of twowitnesses.

RALPH MCCARTY. WALTER S. GIELE. Witnesses:

WM. ROBINSON,

I-IATTIE S. CoovER.

